What data and structures were used in the MongoDB database in your last project?
Junior — Middle
308
Java
14770
265
Where have you used the @Transactional annotation?
Middle
308
What are the advantages and disadvantages of using CopyOnWriteArrayList in Java?.
Junior — Middle
308
Explain the concept of a wrapper class and its purpose in object-oriented programming.
Junior — Middle
308
Task #3 What will be the result in Session #1? Connecting to the database with table t with the line INSERT INTO t(id,val) VALUES (3,'c'); COMMIT; Session #1 ------------------------ psql> BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ; -- T1 ------------------------ Session #2 ------------------------ psql(T2)> UPDATE t SET val='c2' WHERE id=3; COMMIT; ------------------------ Session #1 ------------------------ psql(T1)> SELECT id,val FROM t WHERE id=3 ------------------------
Senior
308
What are the advantages and disadvantages of using CompletableFuture for handling asynchronous tasks in Java?
Junior — Middle
308
What methods can you use to synchronize access to collections in a multithreaded environment?
Junior — Middle
308
Have you configured and optimized databases in your projects?
Junior — Middle
308
What methods can be used to split a monolithic application into more modules or services?
Junior — Middle
308
Have you created your own application or project using the Python programming language?
Junior — Middle
308
How can you integrate the latest updates from the main development branch into a separate feature branch in Git?
Junior — Middle
308
Where inside the method is an Integer variable stored?
Junior — Middle
308
How does the use of the lock() method differ from the async() method when managing asynchrony and locks in programming?
Junior — Middle
308
Can you tell about your main responsibilities and tasks in your last project?
Junior — Middle
308
Is it recommended to strive to minimize downtime during I/O operations in multithreaded applications?
Junior — Middle
308
What is the role of the @PostConstruct annotation in the lifecycle of a Java EE or Spring component?
Junior — Middle
308
What are the basic classes and interfaces for working with threads in Java?
Senior
308
How can a class be linked to a database in Java?
Junior
308
Where in the application would you choose to store the database connection URL?
Junior — Middle
308
How do you implement error and exception handling in Java applications?
Junior — Middle
308